Regions and Endpoints
A Region is a geographical area where you can host Cloud resources. Regions are independent from each other, and do not share resources. Resources hosted in a Region cannot be accessed from other Regions. Communication between Regions is only possible using the Internet. For more information about Regions locations, see Regions, Endpoints and Availability Zones Reference.
Data is never automatically transferred between Regions. Data stored on your resources remains in the Region where you deployed them, and is protected by local laws.
You can however copy your account or resources between different Regions. For more information, see Copying Your Outscale Account to Another Region, or Copying an OMI Across Regions and Tutorial: Copying a Snapshot to a Different Region.
A Region consists of one or more Availability Zones. For more information, see the Regions and Availability Zones section below.
When deploying resources, you must use an endpoint to specify the Region. Endpoints are URLs that provide an entry point to a Cloud service. Every service request must contain an endpoint. To reduce latency, each service has a specific endpoint for each Region where it is available. For more information, see Regions, Endpoints and Availability Zones Reference.
Regions and Availability Zones
An Availability Zone (AZ) is a distinct location in a Region. A Region consists of one or more AZs, and each AZ belongs to a single Region.
Each AZ corresponds to a physical datacenter of the Outscale infrastructure in the Region. For safety reasons, AZs are isolated from one another. However, low-latency communication between AZs in the same Region is enabled with fiber-optic links.
You can choose to deploy resources in different AZs to isolate them from one another in the physical infrastructure, and thus reduce risks.
Availability Zones are randomly assigned. Therefore, the first AZ you use in a Region can be placed on any datacenter in that Region. The second AZ is then automatically placed on another datacenter.
Regions and Availability Zones Architecture
Some types of resources are placed in an Availability Zone, while others are placed in a Region. When deploying the following resources, you can either choose a specific AZ or let Outscale choose a default one:
- Instances. For more information, see About Instances.
- BSU volumes. For more information, see About Volumes.
- Subnets. For more information, see About VPCs.
- Load balancers. For more information, see About Load Balancers.
- NAT gateways. For more information, see About NAT Devices.
- Virtual private gateways. For more information, see VPN Connections.
For more information about available AZs, see Regions, Endpoints and Availability Zones Reference.